{"title":"表型变异对不同冬小麦品种籽粒氧、氢同位素组成的影响","authors":"Florian Cueni, Daniel B Nelson, Ansgar Kahmen","doi":"10.1080/10256016.2021.2002855","DOIUrl":null,"url":null,"abstract":"<p><p>Stable isotope analyses are the leading method for geographic origin determination, especially of plant-based agricultural products. Origin analysis is typically done by comparing a suspicious sample to reference materials with known geographic origin. Reference materials are usually collected at the species level, assuming different varieties of a species to have comparable isotope compositions within a given location. We evaluated whether different phenotypes that are expressed in different varieties of winter wheat (<i>Triticum aestivum</i> L.) influence the oxygen (<i>δ</i><sup>18</sup>O) and hydrogen (<i>δ</i><sup>2</sup>H) isotope composition of plant tissue water and organic compounds. We found that mean <i>δ</i><sup>18</sup>O and <i>δ</i><sup>2</sup>H values among winter wheat varieties did not differ significantly in leaf water, however, differed significantly in bulk dried grain tissue. The differences in bulk dried grain <i>δ</i><sup>18</sup>O and <i>δ</i><sup>2</sup>H values among varieties can be related to differences in phenotypic trait expression among varieties. Despite this substantial phenotypic variability, the overall variability of bulk dried grain <i>δ</i><sup>18</sup>O and <i>δ</i><sup>2</sup>H values among varieties was small (SD 0.54 ‰ for oxygen, 3.60 ‰ for hydrogen). We thus conclude that reference materials collected at the species level should be sufficient for geographic origin analysis of winter wheat and possibly other cereals using <i>δ</i><sup>18</sup>O and <i>δ</i><sup>2</sup>H values.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Effects of phenotypic variability on the oxygen and hydrogen isotope compositions of grains in different winter wheat varieties.\",\"authors\":\"Florian Cueni, Daniel B Nelson, Ansgar Kahmen\",\"doi\":\"10.1080/10256016.2021.2002855\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Stable isotope analyses are the leading method for geographic origin determination, especially of plant-based agricultural products. Origin analysis is typically done by comparing a suspicious sample to reference materials with known geographic origin. Reference materials are usually collected at the species level, assuming different varieties of a species to have comparable isotope compositions within a given location. We evaluated whether different phenotypes that are expressed in different varieties of winter wheat (<i>Triticum aestivum</i> L.) influence the oxygen (<i>δ</i><sup>18</sup>O) and hydrogen (<i>δ</i><sup>2</sup>H) isotope composition of plant tissue water and organic compounds. We found that mean <i>δ</i><sup>18</sup>O and <i>δ</i><sup>2</sup>H values among winter wheat varieties did not differ significantly in leaf water, however, differed significantly in bulk dried grain tissue. The differences in bulk dried grain <i>δ</i><sup>18</sup>O and <i>δ</i><sup>2</sup>H values among varieties can be related to differences in phenotypic trait expression among varieties. Despite this substantial phenotypic variability, the overall variability of bulk dried grain <i>δ</i><sup>18</sup>O and <i>δ</i><sup>2</sup>H values among varieties was small (SD 0.54 ‰ for oxygen, 3.60 ‰ for hydrogen). We thus conclude that reference materials collected at the species level should be sufficient for geographic origin analysis of winter wheat and possibly other cereals using <i>δ</i><sup>18</sup>O and <i>δ</i><sup>2</sup>H values.</p>\",\"PeriodicalId\":14597,\"journal\":{\"name\":\"Isotopes in Environmental and Health Studies\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2022-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Isotopes in Environmental and Health Studies\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1080/10256016.2021.2002855\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2021/11/30 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Isotopes in Environmental and Health Studies","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1080/10256016.2021.2002855","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2021/11/30 0:00:00","PubModel":"Epub","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Effects of phenotypic variability on the oxygen and hydrogen isotope compositions of grains in different winter wheat varieties.
Stable isotope analyses are the leading method for geographic origin determination, especially of plant-based agricultural products. Origin analysis is typically done by comparing a suspicious sample to reference materials with known geographic origin. Reference materials are usually collected at the species level, assuming different varieties of a species to have comparable isotope compositions within a given location. We evaluated whether different phenotypes that are expressed in different varieties of winter wheat (Triticum aestivum L.) influence the oxygen (δ18O) and hydrogen (δ2H) isotope composition of plant tissue water and organic compounds. We found that mean δ18O and δ2H values among winter wheat varieties did not differ significantly in leaf water, however, differed significantly in bulk dried grain tissue. The differences in bulk dried grain δ18O and δ2H values among varieties can be related to differences in phenotypic trait expression among varieties. Despite this substantial phenotypic variability, the overall variability of bulk dried grain δ18O and δ2H values among varieties was small (SD 0.54 ‰ for oxygen, 3.60 ‰ for hydrogen). We thus conclude that reference materials collected at the species level should be sufficient for geographic origin analysis of winter wheat and possibly other cereals using δ18O and δ2H values.
期刊介绍:
Isotopes in Environmental and Health Studies provides a unique platform for stable isotope studies in geological and life sciences, with emphasis on ecology. The international journal publishes original research papers, review articles, short communications, and book reviews relating to the following topics:
-variations in natural isotope abundance (isotope ecology, isotope biochemistry, isotope hydrology, isotope geology)
-stable isotope tracer techniques to follow the fate of certain substances in soil, water, plants, animals and in the human body
-isotope effects and tracer theory linked with mathematical modelling
-isotope measurement methods and equipment with respect to environmental and health research
-diagnostic stable isotope application in medicine and in health studies
-environmental sources of ionizing radiation and its effects on all living matter